Short-term and long-term clinostat and vibration-induced biochemical changes in dwarf marigold stems. |
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Authors: | S M Siegel B Z Siegel |
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Institution: | Department of Botany, University of Hawaii at Manoa, Honolulu 96822, USA. |
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Abstract: | Stems of 21-day dwarf Marigold plants cultivated on the clinostat were compared with plants cultivated on vertical axis rotators ("vibrational controls") and stationary controls for long-term changes in cell wall composition. Stems of 21-day plants grown under stationary conditions and subsequently exposed to the clinostat for 24 hours were also analyzed. Among the long-tern markers, calciun, lignin, and protein-bound hemicellulose (possibly cell wall glycoprotein) clearly differentiated the effects of vibration from those of the clinostat. Short-term differential responses included rate of ethylene production, nastic movement and peroxidase activity of the cell wall, but not of the protoplast. |
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